Despite rumors, Nick Cannon says everything is going great between him and his wife, Mariah Carey.

As early as October of last year, tabloids reported that Carey was cheating on Cannon with rapper Nas. National Enquirer claimed that Carey was seen "flirting up a storm" with 40-year-old Nas at his Sept. 12 birthday party while "NOT wearing her wedding ring." The tabloid also said that Cannon was jealous about "the long hours" Carey spent with talk show host Arsenio Hall, 58.

According to Cannon, 33, however, his marriage is more than okay.

"It's amazing, man," Cannon said on Sirius XM radio's The Howard Stern Show yesterday. "We about to be [married] six years on the 30th."

The America's Got Talent host was especially adamant about the rumors concerning Carey and Nas.

"It's amazing to me when I hear that stuff," Cannon said. "Nas is probably one of the best rappers to ever do it, Howard. He's a friend of mine. He's a friend of hers. She went to his birthday party, and I think I was in L.A. ... It'd be very difficult to make me jealous. I'm probably one of those dudes that's really secure in my relationship."

In fact, Cannon seems to argue that Carey, 44, has no need to stray because they have "the best sex I've ever had."

"She doesn't care when I talk about our sex life because our sex life is amazing," Cannon explained.

Cannon recently publicly listed his past celebrity lovers, which Carey is apparently not as excited to hear about. Still, Carey is reportedly not too concerned about one of Cannon's alleged former partners, reality star Kim Kardashian.

"She doesn't even know who Kim Kardashian is," Cannon revealed. "She doesn't pay attention to that."

Check out Cannon's entire interview with America's Got Talent colleague Howard Stern here.

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Follow Scharon Harding on Twitter: @SH____4.